Vastu is neither a science nor an art,rather it is a
vidhya because it is been
derieved from Vedas. Anything which we get from Vedas
is termed as vidhya like
Sangeet Vidhya, Natya Vidhya, Jyotish Vidhya, Vastu Vidhya.

Vastu finds its origin in Esthapatya Veda which in turn
is a part of Atharva
veda. The Vedas are originally spoken by THE GOD at the
time of formation of
prakruti ie; matters trillions of year ago. It has been
scientifically proved that energy is inversely proportional
to
matter. Vastu teaches us to transform energy into material
form. Vastu hits the
invisible energy, everything that is visible is the result
of invisible.

The word Vastu is an inclination of 5 basic element
of nature :

EARTH – BHUMI

SPACE - GAGAN

AIR - VAYU

FIRE - AGNI

RAIN - NEER

Therefore, if you are one with nature,you are
one with THE GOD Five elements of nature,
i.e., Air, Fire, Earth, Water and Space are responsible
for
generating positive and negative
energies. These five elements are not physical substances
but powers or essences describing all matter
and all attributes. These elements are also associated
with colors, seasons, directions and organs. For
example, the elements -

'Fire' is associated with red, summer,
the south, the heart.

'Earth' positioned at the center,
stands for yellow, oranges, or brown, mid-autumn, etc.
and the
liver.

'Air' is blue autumn, north and
the lungs and gall bladder it gets), winter,
the west, and
the
kidneys.

'Space' is shapeless, colourless
and has North-East direction effects mind and
cells.

One of the story about origin of Vastu Shastra is related
to the birth of Vastu
Purush.

A fierce battle between lord shiva and demon Andhaka
took place. During course
of battle few drops of perspiration from lord shiva fell
on the ground. Out of these
drops emerged a horrifying figure. When he walked the
earth trembled. When
he breathed the wind blew, when he drank the water level
goes down. He was
the manifestation of unrestrained chaotic energy. This
demon needed to be
contained since he was threatening to wreak havoc throughout
the earth.

The terrified Gods went to brahma. Brahma told them
to hold the person
faced down. 45 deities pressed him down with Lord Brahma
in the middle. He
complained to brahma about his innocence, Brahma blessed
him by giving him
name and status of Vastu Purush who will be presiding
deity of all plots and
building and offering will have to made to him. If anybody
failed to do so then he
may eat them.

This is a story. The truth is once in ancient times
there was an immense destructive force which was controlled
by 45 deities ie; engineers. There set of guidline or
regulation or bye laws was termed as vastu Purush. Vastu
Purush was
born on Krishna paksha, Bhadrapad masa, Tritiy Tithi,
Shaniwar, Kritika nakshatra, Vayatipat Yoga, Vishti Karan
during Bhadra in
kullika muhurat. This
is like Indian constitution was born on 26th Jan,1950.